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8. Write section (PH section)
8.2
Operation
8.2.1
Exposure path
• 4 units of the printer head are used for exposure process.
• The surface of the photo conductor is irradiated with a laser light and an electrostatic
latent image is thereby formed.
• The polygon mirror, which has only four faces.
• The laser light emitted from the laser diode scans one line for each face of the polygon
mirror.
Transfer belt
PC drum Y
Beam
PC drum
Direction
of rotation
of the PC
drum
G2 lens
Return mirror 2
22
Y
M
LD/Y
LD/M
Beam
Polygon
mirror
Laser diode
G1 lens
Return mirror 1
Theory of Operation
Theory of Operation Ver. 1.0 Sep. 2008
C
K
2nd image transfer roller
LD/C
LD/K
Surface of the PC drum
One lines
One scan
Direction of
rotation of
the PC drum
A02FT2E101AA
Y109670-2
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